package org.example.classtopia.Utils;

import com.aliyun.oss.OSS;
import com.aliyun.oss.OSSClientBuilder;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Component;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.io.InputStream;
import java.net.MalformedURLException;
import java.net.URI;
import java.net.URISyntaxException;
import java.net.URL;
import java.util.UUID;

@Component
public class AliOSSUtils {
    @Value("${aliyun.oss.endpoint}")
    private String endpoint;

    @Value("${aliyun.oss.accessKeyId}")
    private String accessKeyId;

    @Value("${aliyun.oss.accessKeySecret}")
    private String accessKeySecret;


    public String upload(MultipartFile multipartFile, String bucketName) throws IOException {
        // 获取上传的文件的输入流
        InputStream inputStream = multipartFile.getInputStream();

        // 避免文件覆盖
        String originalFilename = multipartFile.getOriginalFilename();
        String fileName = UUID.randomUUID().toString() + originalFilename.substring(originalFilename.lastIndexOf("."));

        //上传文件到 OSS
        OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
        ossClient.putObject(bucketName, fileName, inputStream);

        //文件访问路径
        String url = "https://" + bucketName + "." + endpoint + "/" + fileName;

        // 关闭ossClient
        ossClient.shutdown();
        return url;// 把上传到oss的路径返回

    }

    public void DeleteFile(String FileUrl){
        try{
            URI uri = new URI(FileUrl);
            String host = uri.getHost();
            String bucketName = host.split("\\.")[0];
            String ObjectKey = uri.getPath().substring(1);
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);

            try{
                ossClient.deleteObject(bucketName, ObjectKey);
            }
            catch (Exception e){
                System.err.println("删除文件失败！" + e.getMessage());
            }
            finally {
                ossClient.shutdown();
            }
        }
        catch (URISyntaxException e){
            System.err.println("URL查找失败！" + e.getMessage());
        }
        catch (Exception e) {
            System.err.println("删除文件失败！" + e.getMessage());
        }
    }
}
